The invention relates to a low-pollution combustion chamber provided with a premixing and pre-evaporating ring pipe, which adopts a single-ring cavity structure and consists of a combustion chamber outer casing, a combustion chamber inner casing, an outer flame tube, an inner flame tube and a combustion chamber head part, wherein air used for combustion completely enters into the flame tubes fromthe combustion chamber head part; the scheme of fractional combustion can be adopted, and pre-combustion stage and a main-combustion stage are divided; the main-combustion stage comprises the premixing and pre-evaporating ring pipe, a main-combustion stage nozzle and a main-combustion stage swirler; fuel oil is evaporated and mixed inside the premixing and pre-evaporating ring pipe and then enters into the flame tubes after forming even mixed combustible gas, belonging to premixed combustion; a fuel nozzle is used for supplying the fuel oil for the pre-combustion stage and the main-combustionstage; the stable working range of the combustion chamber is mainly controlled by the pre-combustion stage, so that the stable combustion can be ensured to be carried out in the combustion chamber within wider working range, and a stable ignition source can be provided for the main-combustion stage; the pollution emission is mainly controlled by the main-combustion stage, and the equivalent weight ration of the premixed gas of the main-combustion stage can be controlled within the low-pollution combustion range, so that the pollution emission of the whole combustion chamber cam be ensured to be greatly reduced. The premixing and pre-evaporating structure has small size, simple structure and modularized characteristic, can reduce the pollution emission of the combustion chamber of an aircraft engine, and ensures good combustion stability.